Baader Contrast Booster Filter 2inch 2458365
Planoptically Polished with Phantom Coating Group (PCG).
Unique filter for many different astronomical tasks. Incomparable in accracy to combinations of generic color filters made of raw polished glass – where surface inaccuracy adds up in the optical wave front to an unbearable degree! Especially designed to improve the ubiquitous beginners telescopes – to provide a professional replacement for the simple `dark green` Moon & Solar-Filters made of `raw polished` glass.
(Note: for solar observation use only in combination with Baader AstroSolar Safety Film!)
WARRANTY: 24 MONTHS